The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1998
Filed:
Mar. 08, 1996
Applicant:
Inventors:
Winfried Muskalla, Eltville, DE;
Robert Schmidt, Bad Homburg, DE;
Karl-Heinz Kochem, St. Ingbert, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
2641 / ; 264400 ; 264162 ; 2642102 ; 264216 ; 2642358 ; 264284 ; 2642902 ; 425 66 ; 425 71 ; 425224 ; 425385 ;
Abstract
In a for the production of biaxially stretched films, a take-off roll 4 is arranged downstream of a draw-off roll 3 . A plastic melt is formed into an initial film by means of a slot die 1, cooled on the draw-off roll 3 and passed over the take-off roll 4 which has a predetermined surface roughness. The film is then biaxially stretched and heat-set.